Quantitative Aptitude - Arithmetic Ability Questions

A merchant changed his trade discount from 25% to 15%. This would increase selling price by

The length of diagonal of a square is 9√2 cm. The square is reshaped to form a triangle. What is the area (in sq.cm) of largest in circle that can be formed in that triangle?

7/15 of 5/3 of a number is greater than 7/9 of 3/5 of the same number by 9. Find the quadruple of the number.

Rameshwar goes on a trip on his motor-cycle and rides for 405 kms. If he rides for 6 hours at a speed of 45 km/hr, find at what speed he travels for the remaining 3 hours of the journey?

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

tan(A/2) is equal to

The value of x13+x-13x23-1+x-23

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?